High power tube support and cooling system



NOV- 13, 1934- L. A. GEBHARD ET Al. 1,980,753

HIGH POWER TUBE SUPPORT AND COOLING SYSTEM Origihal Filed June 17, 1926 lll/)Illa A TTORNEY 25 of an electron tube may be received and enclosed, spring 5.l Part 16 provides a seat for spring 4 n 40 be understood from the specification hereinafter culates about the anode 24, Screws 26 are held g 'l Patented Nov. 13, 1934 I UNITED STATES PATENT oFFicE HIGH POWER TUBE SUPPORT AND COOLING SYSTEM Louis A. Gebhard, Washington, D. C., Edwin Lee White, Honolulu, Territory of Hawaii, and Corrie F. Rudolph, Washington, D. C., assignors, by mesne assignments, to Wired Radio, Inc., New York, N. Y., a corporation of Delaware Application June 17, 1926, Serial No. 116,591 Renewed February 13, 1929 3 Claims. (Cl. Z50-27.5)

Our invention relates broadly to electron tube in its mounting and provide an exceedingly long, apparatus and more particularly to a resilient flexible mechanical connection between the tube support and cooling jacket for high powered elecsocket and frame which effectively absorbs all tron tubes. external vibrations. kStraps 6 assist in support- One of the objects of our invention is to provide ing rings 2 and 3 and also act as abutments 'co a construction of cooling jacket for high powered against twisting movement of studs 7 which proelectron tubes by which a high powered tube may ject between the straps 6. The jacket is probe readily centered within the cooling jacket and vided With et SCreW Clamping member 3 WhCh cooling fluid circulated around the anode of the Serves t0 Clamp the tube 9 against a gasket 10 10 tube while shock vibration is prevented from and thus provide a watertight connection around 05 reaching the electron tube structure by means of the heck of the tube.`v This member is also dearesilient suspension interposed between aframe Signed t0 provide u Cehvehierlt hand grip and support and the electron tube. electrostatic shield around the tube. Part 8 is Another object of our invention is to provide a provided with movable slides 11 arranged to slide 15 construction of socket support for a high powered S-Orls guides l2 and engage the ledge 13 around 7o electron tube wherein a liquid tight seal is protheanode of the vacuum tube 9; After the slides vided, permitting the circulation of e. cooling nuicl` 1l have passed over the ledge 13 the Screw clamparound the anode structure of the electron tube ing member 8 muy be Screwed dOWn at 14 t0 form at the same time supporting the tube and reducing the watertight Conneeton about the neck of the the transfer of shocks and jars to the electrodes tube. `15 iS a metal tube which is fastened to of the tube Structure, part 16 at one end and part 17 at the other end.

Still another object of our invention is to pro- TO Dart 17 iS attached a connection 18 for the vde a construction of high powered electron tube water or other liquid supply. Part 17 also prosupport and cooler therefor, wherein the anode vides a seat in the form of an annular ring 19 for and a liquid tight seal provided therewith in such as represented `at 20. It alsoprovides a chamber manner that a cooling fluid may be circulated 21 for circulation of cooling fluid which passes around the anode while the entire tube structure around the gap 22. The chamber 16 has atis suspended resiliently for preventing the transtached to the outside thereof a thin metal ribbon '30 fer of shocks and jars to the electrodes thereof. 23 which provides good electrical connection Another object of our invention is to provide a particularly at high frequencies, between the resilient support for a high powered electron tube vacuum tube anode 24 and the external circuit. structure, wherein a cylindrical receptacle is re- The ribbon 23 is looped to form a exible mechan- Silentlv suspended frOm a frame Structure for ical connection and thus external vibrations are receiving the anode 0f a high powered tube with not transmitted to the tube. vThe other end of :93 an annular hand grip for clamping the electron ribbon 23 is fastened tothe framework 1. Screws tube within the Support and lJrOvdrlg er1 eleetrO- 26 serve to hold the anode 24 in alignment with static shield around the tube. the wall of metal tube 15 and thus provide a Other and further Objects of our invention will path for the iiow of the cooling liquid which cirfollowing by reference to the accompanying drawby part 7, which is in turn fastened to 15. A ing wherein: part 27 serves to lock screw 26 in place. Part 28 Figure 1 is a vertical cross-sectional view is a resilient sleeving which provides a shock through the shock proof mounting and cooling proof covering for the parts 26, 7 and 27 which jacket fOr eleCt-rOrl tubeS, ShOWrlg a high powered serve also as stops, or bumpers, limiting the mo- `irl-00 electron tube supported therein; and Fig. 2 is a tion of the wholeunit when part 8 is put in place fragmentary cross-sectional View through the cr removed. The stops are so situated that in electron tube mounting taken on line 2 2 of Fig. normal operation they are a short distance from 1 and showing the outlet for the cooling fluid parts 6 for preventing the transmission of me- 5'0 which passes around the anode of the tube strucchanical vibration to the vacuum tube. When im ture. part 8 is loosened or tightened, the stops prevent Referring to Fig. 1 this device consists of a movement beyond the short space between them framework 1 with attached rings 2 and 3 formand the framework 1 and parts 2 and 3. The ing a seat for two helical springs 4 and 5. The jacket as a whole, is supported thru the framesprings 4 and 5 serve to center the tube socket work 1 from insulators 25. 110

Heretofore in the art previous devices have been unsuitable for various reasons; principally (1) boiling of cooling liquid immediately about the anode of the tube, (2) improper shock-proof mounting, and (3) excessive size.

The boiling of the cooling liquid about the anode of the vacuum tube is due to too low a velocity of iiow of the Water particularly at critical points. opening 22 between the wall of the jacket 15 and the anode 24. This is important from an economical standpoint, lowering cooling liquid consumption. A narrow opening is suitable because due to the high velocity only the water immediately in contact with the anode is effective in cooling. Particular dfiiculty has been experienced in previous designs at the neck of the tube. The improved jacket is provided withV an opening 22 which is unobstructed about the entire tube and thus leaves no unprotected parts. The liquid may ilow up thru 18 about anode 24 and uninterrupted thru opening 22 to chamber 21. Chamber 21 has a larger cross-section than other parts of the system and thus provides a low resistance path for the flow of the liquid from any point of opening 22. Chamber 21 has an outlet 29 on the opposite side of thefview shown in Fig. 1, as shown more clearly in Fig. `2. v A chamber 30 is provided to permit different lengths of anodes 24 to be used-and also to provide a small reservoir for the cooling liquid.

The shock-proof mounting ofV the improved jacket is arranged in such a way that mechanical vibrations from external sources are not transmitted to the tube. This is done by arranging a maximum length of path of vibration with suitable rigidity. `The arrangement is such as tov provide la minimum of space and greatest compactness. This is highly desirable, particularly at high frequencies. For satisfactory operation at these high frequencies, it is desirable to have minimum distributed capacities ofq'associated vcircuit parts. To make these capacities low the parts must be as small as practicable. Theimproved jacket meets these requirements.

We have shown the spring members 4 and 5 as substantially conical in shape, that is, smaller Vat their extreme outer ends and larger adjacent l springs may be employed between the members 3-16 and 2--19.

The construction of our` improved electron tube socket support and cooling system is particularly desirable from the viewpoint of inexpensive manufacture and production.

The improved jacket provides a small While we have described our invention in a preferred embodiment we desire that it be understood that modications may be made and that no limitations upon the i'vention arey intended other than are imposed by .the .scope of the appended claims.

What we claim as new and desire to secure by Letters Patent of the United States is as follows:

1. A support for a high power electron tube structure having a depending cylindrical anode comprising a receptacle for enclosing the anode of said electron tube structure, a pair or ring members located adjacent the center of said receptacle and supported from a frame structure, a pair of coiled spring members disposed between inlet adjacent the lower end of said receptacle and a uid outlet adjacent the opposite end of said receptacle whereby cooling fluid may be circulated around said anode and mechanical vibration prevented from reaching said electron tube structure.

2. A support for a high power yelectron tube having a depending cylindrical anode comprising a receptacle adapted to receive the vanode of said electron tube, a ring member adjacent the upper end ofv said receptacle for providing a sealing zone between said receptacle and said electron tube, means for ycirculating the cooling fluid from the lower portion of said receptacle around said anode and` discharging the uid adjacent the upper portion of said receptacle, a framev structure and a pair of coiled spring members disposed between said frame structure and said receptacle for suspending said electron tube structure resiliently during the circulation of cooling fluid around said anode.

k3. A support for a high power electron tube having an elongated cylindrical anode comprising a cylindrical receptacle for receiving the cylindrical anode of said electron tube, spring structure for permanently locating said ring members centrally of said receptacle, and a plurality of strip-like members extendingy longitudinally between said ring members and spaced one from another, a plurality of radially positioned stops secured to said receptacle and extending between said strip like members whereby twisting of said receptacle in said resilient suspension beyond denite limits is prevented.

. LOUIS A. GEBI-IARD.

' EDWIN LVWHITE.

`CORRIE F. RUDOLPH.

said ring members and said receptacle, a iiuid 

